2110000091909 has 2 divisors, whose sum is σ = 2110000091910. Its totient is φ = 2110000091908.

The previous prime is 2110000091893. The next prime is 2110000091971. The reversal of 2110000091909 is 9091900000112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1280665672225 + 829334419684 = 1131665^2 + 910678^2 .

It is a cyclic number.

It is not a de Polignac number, because 2110000091909 - 2⁴ = 2110000091893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2110000091509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055000045954 + 1055000045955.

It is an arithmetic number, because the mean of its divisors is an integer number (1055000045955).

Almost surely, 2^{2110000091909} is an apocalyptic number.

It is an amenable number.

2110000091909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2110000091909 is an equidigital number, since it uses as much as digits as its factorization.

2110000091909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 32.

The spelling of 2110000091909 in words is "two trillion, one hundred ten billion, ninety-one thousand, nine hundred nine".